✓ In stock White nylon cowl vent grommet for Ford trucks and vans. Accepts an M4.2 (#8) adjusting screw and fits into a 10×14mm oval hole in the cowl panel. Restores a factory-tight, rattle-free fit wherever cowl panel fasteners are used. Specifications Type: Cowl Vent Grommet Material: Nylon Color: White Screw Size: M4.2 (#8) Hole Size: 10×14mm Vehicle Fitment Ford Excursion (2000–2005) Ford Expedition (1997–2002) Ford F-150 (1997–2004) Ford F-250/F-350/F-450/F-550 Super Duty (1999–2007) Ford Windstar (1995–2003) Lincoln Navigator (1998–2002) Cross-Reference Numbers Auveco: 20171 Car-Pak: 99-8009 Clip Lizard: 20139 Crest Midwest: CRX15942 Disco: 10384 Ford OEM: N807189-S100 Ford OEM: N811353-S100 S&R: 285202 Shop Supplies: FN10384 Winzer: 503.8009 Wurth: 150120171 What screw size does this grommet accept? This grommet accepts an M4.2 (#8) adjusting screw — the standard size used in Ford cowl panel applications from 1995 through 2007. What hole size does it fit? It fits a 10×14mm oval hole. This is the standard cowl panel hole size used across the Ford F-150, Expedition, Excursion, Super Duty, and Windstar. Is this an OEM-equivalent replacement? Yes. This grommet is a direct replacement for Ford OEM part numbers N807189-S100 and N811353-S100, meeting the same fit and function as the original factory part. Which Ford and Lincoln vehicles is this compatible with? This grommet fits the Ford Excursion (2000–2005), Ford Expedition (1997–2002), Ford F-150 (1997–2004), Ford F-250/F-350/F-450/F-550 Super Duty (1999–2007), Ford Windstar (1995–2003), and Lincoln Navigator (1998–2002). What happens if worn cowl grommets aren't replaced? Cracked or missing grommets allow water to seep into the cowl area and cause the cowl panel to rattle at speed. Replacing them restores a factory-tight seal and prevents moisture intrusion into the cabin.